As mentioned in this special status report[1] from EuroBSDCon 2013, WITH_SSP_PORTS was relevant in the FreeBSD 9 and FreeBSD 10 days. Nowadays, -fstack-protector is set by default. Relevant knobs and variables are documented in ports/Mk/bsd.port.mk. WITH_GHOSTSCRIPT_VER was part of USE_GHOSTSCRIPT, which is deprecated. [1]: https://www.freebsd.org/news/status/report-2013-09-devsummit.html#Ports-and-Packages Reviewed by: bcr, mat, tobik Approved by: bcr (doc) Approved by: krion (mentor, implicit), mat (mentor, implicit) Differential Revision: https://reviews.freebsd.org/D18056